212121200102102 has 32 divisors (see below), whose sum is σ = 319033293422592. Its totient is φ = 105777178340544.

The previous prime is 212121200102089. The next prime is 212121200102143. The reversal of 212121200102102 is 201201002121212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8900302778 + ... + 8900326610.

It is an arithmetic number, because the mean of its divisors is an integer number (9969790419456).

Almost surely, 2^{212121200102102} is an apocalyptic number.

212121200102102 is a deficient number, since it is larger than the sum of its proper divisors (106912093320490).

212121200102102 is a wasteful number, since it uses less digits than its factorization.

212121200102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31932.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212121200102102 its reverse (201201002121212), we get a palindrome (413322202223314).

The spelling of 212121200102102 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred million, one hundred two thousand, one hundred two".